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Reports, Abstracts, etc.
December 2007 Vol. 19, No. 3
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On words and dinosaur bones: Where is meaning?
Jeff Elman
Department of Cognitive Science, UC San Diego
Virtually all theories of linguistics and of language processing assume the language users possess a mental dictionary - the mental lexicon - in which is stored critical knowledge of words. In recent years, the information that is assumed to be packed into the lexicon has grown significantly. The role of context in modulating the interpretation of words has also become increasingly apparent. Indeed, there exists now an embarrassment of riches which threatens the representational capacity of the lexicon.
In this talk I will review some of these results, including recent experimental work from adult psycholinguistics and child language acquisition, and suggest that the concept of a lexicon may be stretched to the point where it is useful to consider alternative ways of capturing the knowledge that language users have of words.
Following an idea suggested by Dave Rumelhart in the late 1970s, I will propose that rather than thinking of words as static representations that are subject to mental processing-operands, in other words-they might be better understood as operators, entities that operate directly on mental states in what can be formally understood as a dynamical system. These effects are lawful and predictable, and it is these regularities that we intuitively take as evidence of word knowledge. This shift from words as operands to words as operators offers insights into a number of phenomena that I will discuss at the end of the talk.
Sign Language Surprises
Susan Fischer
Max-Planck-Institute for Psycholinguistics
Until quite recently, most research on sign languages has been on those sign languages based originally in Europe, such as differences between Asian and Western sign languages in syntax, the use of prosody to convey syntactic distinctions, and especially word information. If time permits, I shall then return to the proposed commonalities and speculate on why they don’t seem to extend to so-called “village” sign languages..
The development of word recognition: a cognitive control problem?
Sarah Creel
Department of Cognitive Science, UC San Diego
We know quite a bit about word recognition in very young children (2 years and under) and young adults. Much less is known about the interim: how do children in this middle range interpret spoken language, and what sorts of errors do they make? Around preschool, children have large vocabularies but make particular mistakes in both cognitive tasks and language processing tasks. The common factor seems to be inability to recover from bias toward a now-irrelevant response. I report preliminary data exploring the potential relationship between so-called perseverative errors (going with the biased, but wrong, response) in cognitive tasks and children's incremental interpretation of word identity. I then outline a planned series of experiments designed to investigate what information sources children do and do not take into account when interpreting spoken language.
Aphasia Rounds III: An Overview of Aphasia Syndromes
Nina Dronkers
Center for Aphasia and Related Disorders, VA Northern California Health Care System; Departments of Neurology and Linguistics,
U
C
Davis
;
Center for Research on Language, UC
San Diego
This third presentation in our series of "Aphasia Rounds" will be an overview of the seven major types of aphasia with video examples of patients exhibiting these disorders. Prior to the lecture, an individual with aphasia has consented to be interviewed about her language difficulty and to answer questions from the audience.
Cross-linguistic investigation of determiner production
Xavier Alario
Laboratoire de Psychologie Cognitive CNRS & Aix-Marseille Université
Language production is generally viewed as a process in which conceptual semantic messages are transformed into linguistic information. Such a description is probably appropriate for some aspects of the process (e.g. noun production), yet it is clearly incomplete.
Consider for instance the fact that in numerous languages determiner forms depend not only on semantic information but also on several other kinds of information. In Germanic, Slavic, and Romance languages, the retrieval of the determiners (and other closed- class words, such as pronouns) also depends on a property of the nouns called “grammatical gender.” For instance, in Dutch, nouns belong to the so-called “neuter” gender or to the “common” gender. The definite determiners accompanying the nouns belonging to the two sets are respectively het (e.g. het huis, ‘the house’) and de (e.g. de appel, ‘the apple’). In English, consonant-initial nouns and vowel-initial noun can require different indefinite article forms (e.g. a pear vs. an apple).
Such properties of determiners surely impose constraints on how these lexical items can be retrieved. For this very reason, determiners provide a broad testing ground for contrasting psycholinguistic hypothesis of lexical processing and grammatical encoding. In my talk, I will review the cross-linguistic research I have been conducting on determiner retrieval. One important question that will be asked, and only tentatively answered, concerns the extent to which open-class words such as nouns and closed-class words such as determiners are processed and selected by similar mechanisms.
Investigating situated sentence comprehension: evidence from event-related potentials
Pia Knoeferle
Center for Research on Language, UC San Diego
We know that people rapidly use information from visual referential contexts to inform online language comprehension. Beyond non-modularity of the language system, however, little is known about the nature and time course with which visual context informs online sentence comprehension. Some informative questions are: How fluid is the interplay between language-mediated attention and the use of attended visual context for comprehension? How important is visual context for comprehension relative to linguistic and world knowledge? And what are the neural correlates of using scene information to facilitate comprehension? In a first part of the talk I will review findings from eye tracking and ERPs that provide evidence for the temporally coordinated and preferred use of visual context, and outline a "Coordinated Interplay Account" of situated comprehension.
A second part of the talk will focus on processing cost associated with the use of visual context (e.g., when scene and sentence are incongruous): Findings from a first ERP study establish N400 amplitude as a measure of scene-sentence integration difficulty. Preliminary data from a second study provides first insights into integration cost for different kinds of scene-sentence incongruities (verb-action vs. role relations).
Interactions between word- and sound-based processes in multilingual speech production
Matt Goldrick
Department of Linguistics, Northwestern
Interactive effects--where processing at one level is modulated by information encoded at another level--have been the focus of a great deal of controversy in psycholinguistic theories. I'll discuss new evidence from my laboratory examining interactions between word- and sound-level processes in multilingual speech production. These results demonstrate that whole-word properties (cognate status, lexicality) influence the processing of sound structure at both a categorical, segmental level as well at gradient, phonetic levels.
Meaning & Motor Action: The role of motor experience in concept formation
Daniel Casasanto
Department of Psychology, Stanford University
How do people transform experience into knowledge? This talk reviews a series of studies testing the hypothesis that our physical experiences in perception and motor action contribute to the construction of even our most abstract thoughts ( e.g., thoughts about value, time, happiness, etc.) Further, these studies begin to distinguish the contributions of linguistic experience, cultural experience, and perceptuo-motor experience to the formation of concepts and word meanings. Some experiments show that people who talk differently think differently; others show influences of non-linguistic cultural practices on conceptual structure; others show that people with different bodies, who interact with their environments in systematically different ways, form dramatically different abstract concepts. These demonstrations of linguistic relativity, cultural relativity, and what I will call 'bodily relativity' highlight the diversity of the human conceptual repertoire, but also point to universals in the processes of concept formation.
The Neural Correlates of Figurative Expressions
Dieter Hillert
Center for Research on Language, UC San Diego
The linguistic design of the human language system is typically based on assumptions about the compositional structure of literal language. However, it has been estimated that for instance in American English people use at least 25,000 idiomatic-like expressions. The talk will therefore focus on the cognitive and neural correlates of figurative language comprehension. An account of the human language system is suggested that divides between a left-sided core language system and a bilateral pragmatic language network. Comprehension of idiomatic expressions that involve alternative parsing strategies correlates with an increase of cognitive costs compared to comprehension of non-figurative default sentence structures. The costs associated with idiom processing seem to be compatible with those related to resolving syntactic ambiguities or reconstructing canonical sentence structures. Moreover, while ambiguous idioms seem to engage as any other kind of standing ambiguity the left superior and medial frontal region to induce search processes through conceptual space, opaque idioms seem to be parsed and rehearsed in Broca's region. By contrast, comprehension of canonical and unambiguous sentences appears to evoke exclusively the left superior and middle temporal cortex. It is concluded that immediate linguistic computations are functionally organized in a modular fashion, but their neural correlates are shared by different cognitive domains..
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